Hi Marshell, What exactly do you mean by "handles this kind of data structure"? What do you want R to do?
Best, Ista On Mon, May 3, 2010 at 9:44 AM, Marshall Feldman <ma...@uri.edu> wrote: > Hello, > > Hierarchical factors are a very common data structure. For instance, one > might have municipalities within states within countries within > continents. Other examples include occupational codes, biological > species, software types (R within statistical software within analytical > software), etc. > > Such data structures commonly use hierarchical coding systems. For > example, the 2007 North American Industry Classification System (NAICS) > <http://www.census.gov/cgi-bin/sssd/naics/naicsrch?chart=2007>has twenty > two-digit codes (e.g., 42 = Wholesale trade), within each of these > varying numbers of 3-digit codes (e.g., 423 = Merchant wholesalers, > durable goods), then varying numbers of 4-digit codes (4231 = Motor > Vehicle and Motor Vehicle Parts and Supplies Merchant Wholesalers), then > varying numbers of five-digit codes, varying numbers of six-digit codes, > etc. At the lowest level (longest code) one can readily tell all the > higher levels. For example, 441222 is "Boat Dealers" who are part of > 44122, "Motorcycle, Boat, and Other Motor Vehicle Dealers," which is > part of 4412 (Other Motor Vehicle Dealers), which is part of 441 (Motor > Vehicle and Parts Dealers), which is part of 44 (Retail Trade). (The US > Census Bureau has extended the 6-digit NAICS to an even more > fine-grained 10-digit system.) > > I haven't seen any R packages or sample code that handles this kind of > data, but I don't want to reinvent the wheel and would rather stand on > the shoulders of you giants. Is there any package or other R-based > software out there that handles this kind of data structure? > > Thanks, > Marsh Feldman > > > > > > > [[alternative HTML version deleted]] > > ______________________________________________ > R-help@r-project.org mailing list > https://stat.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide http://www.R-project.org/posting-guide.html > and provide commented, minimal, self-contained, reproducible code. > -- Ista Zahn Graduate student University of Rochester Department of Clinical and Social Psychology http://yourpsyche.org ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
